pls donate eth to help keep this running! 0xA91E63C9d57Df30970b4900A4965a389936680bC

What is the maximum gas price of a single TX?

lately I tried to participate in an ICO but I was unsuccessful. MEW supports a gas price up to 99 gwei and this wasn't nearly enough in that particular ICO. What is the maximum theoretical gas price and what commonly accessible platform has the highest limit?